At Mike Callahan’s bar, the regulars listen to the tall tales of all time travelers (and others including aliens, vampires, talking dogs, etc.).
And as Callahan refilled glasses all around, the time traveler told us his story.

Variants

(1)
  1. “Callahan’s Crosstime Saloon” by Spider Robinson, in Analog, February 1973.
  2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Spider Robinson